The book I'm reviewing is "The Search for Treasure" by Geronimo Stilton.Geronimo Stilton was called to the Kingdom of Fantasy for the sixth time. He was first called as a skipper in a ship. It was really stormy that Geronimo fell in the water and found a huge rainbow bubble. He quickly dived in and a fish swam to him and told Geronimo that he would make an Ancient Gemstone prophecy come true. Coraline the headmistress of coral academy explained the rest. After that Geronimo went on the quest and met two other heroes who were supposed to fulfil the prophecy. They quickly took the royal ruby from a terrible and terrifying witch named Scorcher and took it to Shining Moon Mountain. After that they gave the royal ruby to a wise king called Azul who had the royal sapphire.My favourite part of the book is when Geronimo was in a meadow and green fairies perched on his nose all of a sudden he accidentally sneezed sending the fairies the fairies flying over the field. If you like any of the other Geronimo Stilton series then you should read this too.